中承式系杆拱桥吊杆更换施工监测  

Construction Monitoring of Suspender Replacement for Half-through Tied Arch Bridge

作　　者：刘全芝 刘彦冰[2] 蔡锋[2] 

机构地区：[1]山东省聊城市住建委,山东聊城252000 [2]东南大学土木工程学院,江苏南京210096

出　　处：《现代交通技术》2012年第6期40-42,共3页Modern Transportation Technology

摘　　要：某中承式钢管混凝土系杆拱桥,在运营过程中,中跨下游的跨中吊杆出现松弛退出工作现象,结合该桥实际状况,经综合分析,决定对问题吊杆立即予以更换。文章重点介绍了在吊杆更换过程中,吊杆索力、拱肋及桥面变形的监测情况,监测情况表明,吊杆更换之后,桥梁恢复正常运营状态。The suspender of the bridge which is a half-through concrete-filled steel tubular tied arch bridge appears stress relaxation in service.Considering the actual situation of the bridge and with the comprehensive analysis,the suspender which has stopped work must be replaced.The paper introduces the monitoring of cable force,arch rib and deck deformation in the process of suspender replacement.It shows that the bridge is in normal operation condition after replacement.

关 键 词：桥梁工程 系杆拱桥 吊杆更换 施工监测 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]